20689045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4483}}^1$

素因数の和:4572

約数の個数: 16

約数和(自身を含む): 27119232

約数和(自身を除く): 6430187

約数列:

[1, 5, 13, 65, 71, 355, 923, 4483, 4615, 22415, 58279, 291395, 318293, 1591465, 4137809, 20689045]

約数ペア:

[(1, 20689045), (5, 4137809), (13, 1591465), (65, 318293), (71, 291395), (355, 58279), (923, 22415), (4483, 4615)]